Video review: Eagles offensive tackles failing

Eagles rookie right tackle Lane Johnson's growing pains have been well-documented. His footwork is not there yet, the result of him adjusting to the speed of the NFL.

But on the other side, grizzled All-Pro Jason Peters is having similar problems, perhaps because he's lost a step off his fastball since sitting out all of last season while recovering from a twice-torn Achilles tendon.

And although the failure of the running game over the last two weeks doesn't fall on their shoulders alone, they have been major players in what's gone wrong, as this week's video snapshots of four failed running plays show.

This first play results in a 1-yard gain by LeSean McCoy on the team's second play from scrimmage. The design was there, and the execution from the others was there, except for Peters, who was supposed to pull to his right and block Giants linebacker Jon Beason (No. 52).

At the snap, you can see him starting to make his way over there:

As Peters approaches Beason, you can see where the lane (or "alley," as Vince Lombardi used to call it) is supposed to be.

But Peters doesn't get the required "seal," even after blatantly grabbing Beason around the waist and getting away with a holding penalty:

Beason beats Peters with ease to smother McCoy, whose head appears to be poking out of Beason's left shoulder pad like a squashed ant:

This second-and-7 play should have been an easy first down. Instead, it was third-and-6, forcing Michael Vick to pass on the next play. It was an interception.

On this next play, another one with a sound design, Peters is isolated on the left side with Jason Pierre-Paul, and his job is simply to get him out of the way by the time McCoy makes it over there and starts turning it up. We also see center Jason Kelce moving toward his left with the intention of taking Beason out:

But Pierre-Paul blows up the play by overpowering Peters and getting inside him:

Even though Pierre-Paul's back is turned toward McCoy as he is blatantly grabbed and held by a beaten Peters, the penetration is enough to force McCoy to reconsider turning right and hitting the crease that was created. Instead, McCoy just keeps going around left end and actually does a good job to pick up 3 yards on the play. Obviously not how it was designed, though:

Now we skip ahead to consecutive runs by McCoy in the second quarter.

In this first play, we can see where both Peters and Johnson fail, but McCoy is able to pick up 2 yards and the first down anyway.

As the play begins, the idea is for Peters to seal off tackle Cullen Jenkins and left guard Evan Mathis to take out linebacker Jacquian Williams and create a running lane for McCoy:

But Jenkins' penetration cannot be stopped, forcing McCoy to his right, where Johnson is having major problems with Justin Tuck:

McCoy essentially has two options here, and both are cut off because the tackles are beaten, Johnson most egregiously as he's overpowered by Tuck:

McCoy fought his way to a first down anyway.

But on the next play, he was thrown for a 3-yard loss because Johnson was abused by Tuck, as we see in the following sequence:

It should be pointed out that even the best lines in the league have breakdowns like this from time to time. But with the Eagles, something like these four examples has gone wrong just about every time they've tried to run the football for two straight weeks.